• Conical twin screw barrel for plastic recycle and pelletizing line 

Hardness of nitration: 950-1020HV

 Fragility of nitration: Less than grade 1

 Roughness of the surface:Ra 0.4um

 Linearity of the screw:0.015mm

 Chromium-plating layer thickness:0.03-0.08mm

 Hardness of double alloys: HRC55-62

 Depth of double alloys:>2 mm

 The surface hard chromium plating hardness after nitrogenation:>=950HV

 Guarantee: Common Nitrided: approx 2 years     Bimetallic : much longer lifetime

 

Technical standard:

1.Material: 38C rMoALA

2.Hardness of modulator: HB260-290

3.Hardness of nitrification:800-1050HV

4.Depth of nitrification layer: 0.4-0.7mm

 

Double-alloy technical standard:

Double-alloy level:

1.Level A - containing tungsten of 40%

2.Level B - containing tungsten of 25%

3.Level C - containing tungsten of 9.5%

4.Hardness of alloy: HRC56-65o

 

Applied scope of plastic: applied for PVC and WPC material,  has a high output and stable performance.

1.Components of alloy powder: Ni + Co + Cr + W + Si + Fe + B + C

2.Depth of alloy layer: 1.2 mm-2.0 mm

3.Hardness of alloy: HRC>65°

 Two stage type of barrel (material of powder outlet is Cr12MoMV, vacuum quenching)
and screw (powder output is treated by alloy), the using lifespan is long as twice
as common ones.The twin screws and barrel can be equipped in differents